Conversions & Hybrids - 5.3 in 56 F100 Active Fuel Management Questions
03-27-2012, 12:06 AM
Ok, so i found a 5.3/4L60E from a guy on craigslist and he says he thinks it is out of a newer body style 2007 GMC Truck. (He bought it for a swap that he never did...or at least that's the story) I will be putting it in a 56 Ford F100 for my father in law. Were going for more of a fuel economy build more than anything.... My question is.... will I be able to get the Active Fuel Management to work or will it just cause me problems? Do I need anything special to make it work other than the PCM from the donor truck? Also, how can I tell if this motor I plan on picking up tomorrow even has active fuel management? Thanks everyone. Keane
P.S. I know everyone like pics and videos so here is the truck. He has had it for 30+ years and it has been in the garage since 1995. He wants to leave it just like it is and just throw a 5.3 in it....
Interior and aaaooogaa
03-27-2012, 11:18 AM
The easiest way to visually tell if the motor has AFM/DOD is to look at the back of the motor on top of the valley cover there will be a 4 or 5 pin connector for the AFM solenoids. If there is no connector then it isn't DOD.
To make AFM functional on a conversion you should call John at Speartech. As far as I know they are the only ones supporting a functional AFM/DOD conversion.
03-27-2012, 11:33 AM
Thanks! I checked out their site and I see what your saying about the connector on the valley cover..... Thanks again..... I've made my own harness before from a stock LS1 harness for my LS1/T56 in my 70 Camaro. Could i just use the stock wiring harness from this 5.3 instead of buying a speartech one? I dont see why the AFM/DOD wouldnt work with the stock harness, right? Or is there some other gadget that they add to make it work? Thanks
03-27-2012, 12:03 PM
Some cars use fuel level signals and wheel speed signals. I don't really komw if that one does.
03-27-2012, 10:07 PM
Well change of events.... :gruffy: My buddy decided to sell his c10 project so i picked up his 2006 5.3/4l60e with LS1 Intake and accessories and PSI Harness, PSI Computer, 5 pin MAF, and Walbro 255 fuel pump for 1200 bucks.... I think he gave me a good deal.
03-28-2012, 12:52 PM
That is a good avenue to take! :D
03-28-2012, 07:15 PM
Haha yeah I have a LS1/T56 in a 70 Camaro and i bought my PCM and wiring harness from you guys......and loved it by the way. Which gave him the idea to get his from you guys also. Great setup....makes for a clean install. Thanks!
Camaro (My wife cleans it all the time....she thinks its hers) Only pic I had on my phone sorry
LS1 w/ PSI Harness
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